Came by with some responses and updates to certain cars.
I guess I can contribute one: Toyota 88C-V
Two things off about this car:
1. Its listed in the game as 1989 when its actually from 1988.
2. The west logo that people made a big deal about does not exist on the actual car.
Found more proof of this car's existence in 1988:
That is from the 1988 Fuji 500, the race that the car debuted and if you watch carefully, you'll see the Minolta liveried car we know as well as the Taka-Q liveried version (mostly towards the end)
Also want to confirm that the Peugeot 908 in-game definitely appears to be a modeled press car:
This in-fact actually looks like this is the exact same source photo used on the GT5 themed flyers for the 2010 24 Hours Of Le Mans.
And finally, I suspect the Gillet Vertigo we have in game might be another presentation car. I'm currently trying to find it but like the Peugeot 908, it has no series/race logo around its number.
Licensing is a lousy excuse when the car made it into the game with WEC and FIA logos.
Old I know, but had to respond as copyright is a real issue. Its the exact reason why the Delta wing was at first listed as a Nissan, then removed and returned under the Delta wing name. PD being only the Developer does not want any legal trouble so they aren't going to chance it.
Edit: It appears the Lister Storm GT we have is yet another Presentation car:
Sorry I couldn't find a bigger picture but with the lack of the sponsors the main cars have and the lack of series/Race stickers, that's pretty much spot on.
Edit II: Two more interesting findings:
1. The Ford Falcon XR8 has lost its Ford Tickford Racing Logo as well as the driver names "Seton" and "Crompton" that adorned its sides back in Gran Turismo 3:
I'm guessing licensing played a role in that since that team AND that name cease to exist.
2 The Option Stream Z is missing its parachute
3.